What is meant by normal modes?

1095

---

What is sonar ( sound navigation and ranging )?

1075

---

For what the parabolic dishes are used?

969

---

How does a sound wave travel in air?

1064

---

What is acoustics?

988

---

What is the wavelength of sound in air?

1018

---

What is loudness of sound?

1067

---

What is the musical sound?

1183

---

What is the pitch?

1014

---

What is sound velocity?

1119

---

Who first detected radio waves?

1014

---

What is the formula of velocity?

975

---

The velocity of sound in gas depends upon what?

999

---

What is frequency of sound in air?

1105

---

What is speed of sound through water?

1018

---